Lock.



PATENTED SEPT. 29, A1903.

G. H. STOUT. LOCK. Arnlomron :mmv snm. 12. 1902.

X0 MODE UNITED STAT-Es satented September 29, 1903.

PATENT OFFICE.

To Lucius A. TURNER AND COLORADO.

JOSEPH E. BRENDLINGER, OF DENVER,

LOCK.

SPECIFICATION forming part of Letters Patent No. 740,060, dated September 29, 1903.

`Application led September 12, 190.2. Serial No. 123,114. (No model.)

1"'0 all whom it may concern:

Be it known that l, GEORGE H. STOUT, a citizen of the United States of America, residing at Denver, in the county of Arapahoe and State of Colorado, have invented certain new and useful Improvements in Door-Locks; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which lo it appertains to make and use the same, reference being had to the accompanying drawings, and tothe figures of reference marked thereon, which'form a part of this specification. I5

' door-locks, my object being to provide a lock which shall be devoid of springs, thus doing away with a troublesome element which frequently breaks or gets out of place, renderzo ing the lock useless until repairs are made. Springs also cause difficulty in assemblinggthe lock mechanism. In my improved lock the bolt normally maintains the locking position by gravity. The bolt consists of a comparatively heavy plate pivoted at its lower rear corner, through which the knob spindle passes. This plate has a projection which when in its normal position projects through the opening in the edge of the casing and enters the keeper-socket in the door-j amb. The lock consists, further, ot' key-operated and night-latch tumblers, all asV hereinafter explained in detail. y

My further object' is to provide a lock of this l 3 5 class which shall be extremely simple in conproved lock mechanism, one side of the cas-.

ing being removed, the bolt-plate and locking-tumblers being shown in'two positions, one in full lines and the other in dotted lines. Fig. 2 shows the lock mechanism from the My invention relates to improvements in for the tumbler are shown in place. Fig. 6 is a'fragmentary front view of the casing, show- 6o -ing the key in place and in section. Fig. 7 is a detail view of the key. Figs. 8 and 9 illustrate the keeper-plate attached to the door- -jamb in two positions.

The same reference characters indicate the same parts in all the views.

Let the numeralV 5 designate the lock-casing, which has an opening 6 in its free edge to allow the bolt to protrude in the usual manner. The bolt-plate 7 is of sufficientV thickness to iill the space between the front and rear plates of the casing, whereby the said plate is 'maintained in position at all times. Thisplate is provided at what will be termed its lower rear corner With bearings engaging the casing and through which an opening 8, vangular in cross-section, is

formed for receiving the operating knob-spindle, which is of ordinary construction. The central part of the plate 7 is provided with a slot 9, through which a post l0, fast to one side of the casing, passes. This post is interiorly threaded to receive a screw 12, which holds the detachable casing-plate in place. 'The slot 9 permits the bolt-plate to move freely without striking the saidpost.

VThe front portion 7 of the plate 7 consists of a part adapted to protrude normally from theopening 6 in the front edge of the casing. This part 7a is provided with an offset or shoulder?, which engages the lock-casing at the lower-extremity of .the opening 6 when the bolt-plate is inthe locking position.

The key-operated tumbler l2 is mounted on a barrel 13, whose extremities are journaled in the sides of vthe lock-casing. This barrel is open to receive the key 14. *i This opening in the barrel consists of acylindrical central bore for the key-stem and a slot for the key-blade 14. The key can only be inserted when the barrel is turned to register with one of the notches 12, formed in the tumbler' 12. The barrel is turned to this position by the engagement of the part 14@ of the key-blade with the slot of the barrel, and when in this position the widest part 14d of the key-blade slips into place, and when the key is turned to operate the tumbler the part 14 of the key-blade engages a slot 120, formed in the tumbler, and moves in the slot without moving the tumbler until the end ofthe slot is reached, when the tumbler is actuated suiiiciently to permit the key to make au entire revolution, whereby it may be drawn through a slot 5, (see Fig. 6,) formed in the front plate of the casing. The slot 12c of the tumbler may be varied at pleasure in order to adapt the lock for keys whose blades Vary, so that no two locks require exactly the same key. It is evident that instead of a single slot 12, formed in the tumbler, several slots may be formed. It is also'evident that this construction will permit the necessary variations for the purpose stated.

The bolt-plate 7 is provided with a notch or recess 7 in its rear edge, into which the tumbler 12 may be turned by the key until it reaches the position shown in full lines in Fig. 2 and by dotted lines in Fig. l or until a projection 12d on the tumbler engages a projection 7g on the lock-plate, which last-named projection forms a stop against further movement of the tumbler in that direction. When the tumbler 12 is in this position, the boltplate is locked against movement. On the other hand, when the tumbler 12 is in the fullline position in Fig. 1 or the dotted-line position in Fig. 2 the bolt-plate may be operated by the knob-spindle or thrown to the dottedline position in Fig. 1.

The lock is also provided with a night-latch tumbler 15, operated from the inside by a suitable spindle 16, which is fitted into a square opening in the tumbler. The boltplate is provided with a recess 7h, into which the tumbler 15 may be turned, as shown by dotted lines in Figs. 1 and 2, whereby the bolt-plateislockedagainstmovement. When this tumbler is thrown to the full-line position in Figs. 1 and 2, the bolt-plate may be thrown by the knob-spindle to the dotted-line position in Fig. 1, allowing the door to be opened.'

The keeper-plate 17 employed in connection with my improved lock is illustrated iu Figs. 8 and 9. This plate is provided with an inclined striking part 17, having shoulders 17, adapted to force the projecting part 7n of the bolt-plate inwardly to the dotted-line position in Fig. 1 during the act of closing the door, after which the said projection 7 will enter the opening 17d of the keeperplate, or, in other words, the bolt-plate will then fall to the full-line position in Figs. 1 and 2 by gravity.

The lock mechanism may be adapted for use on doors turning in either direction by simply turning over the casing or changing it from the position shown in Fig. 1 to the position-shown in Fig. 2. The position ofthe keeper-plate is then reversed by turning it so that what was formerly its upper extremity shall be its lower extremity. 'lhis manipulation of the parts is the only change required to accomplish the purpose stated.

Having thus described my invention, what I claim is- In adoor-lock, the combination with a suitable casing,.a bolt-plate having a projection formed on its upper front edge, said plate being pivoted in the casing at its rear lower corner so as to cause the bolt to assume by gravity a position whereby the projection thereon protrudes through an opening in the front of the casing, a knob-spindle passing through the casing and forming the pivot of said plate, a notch formed in the plate adjacent to the spindle, a night-latch tumbler journaled in the casing to engage said notch, a second spindle suitably mounted on the inside of the door and connected in operative relation with the said tumbler, asecond notch formed abovethe first-mentioned notch, and a second tumbler and a key for operatingsaid second tumbler to cause the same to engage said second notch to hold the bolt-plate in locked position.

In testimony whereof I affix my signature in presence of two witnesses.

GEORGE H. STOUT.

Witnesses:

A. J. OBRIEN, DENA NELSON.

IOO 

